Carbureter.



R. P. NORTON.

GARBURETER.

APPLIOATION FILED JULY 1a, 1913.

1,107,698. Patented Aug. 18, 1914.

THE NORRIS PETERI CO, Puma-1.11m: wAsllrNnluN. 0 c

UNITE RAYMOND P. NORTON, OF

MARSHALLTOWN, IOWA.

CARBURETER.

Specification of Letters Patent.

Patented An 18, 1914.

Application filed July 19, 1913. Serial No. 780,467.

To all whom it may camera Be it known that I, RAYMOND P. NORTON, a citizen of the United States, residing at Marshalltown, in the county of Marshall and State of Iowa, have invented a certain new and useful Czu'lmreter, of which the following is a specification.

The object of my invention is to provide a carbureter of simple, durable and inexpensive construction.

More particularly it my object to pro vide an attachment for carburetors (ilesigned to be used in connection with my carburetor as shown and described in my application for patent, Serial Number 711,013, filed July 22nd, 1912, having means for accurately regulating the size of the air opening around the gasolene intake nozzle and to provide a nozzle so constructed that the increase or decrease of said air opening increases or decreases the size of the opening in the nozzle thereby providing a carburetor in which the flow of gasolene and the flow of air is in creased or decreased simultaneously in order to produce a perfect mixture.

Still a further object is to provide such a carburetor as above mentioned provided with adjustable means. In addition to the air controlling device for regulating the access of air to the opening in the gasolene supply nozzle said means being designed for permanent adjustment for adapting my carbureter to various motors and circumstances.

My invention consists in certain details, in the construction, combination and arrangement of the various parts of the device whereby the objects contemplated are attained, as hereinafter more fully set :t'orth, pointed out in my claims and illustrated in the :uzcompanying drawings, in which:

Figure 1 shows a vertical central sectional view through the carburetor embodying my invention. Fig. 2 shows a sectional. detail view taken on the line 2-2 of Fig. 1. Fig. 3shows a sectional detail view taken on the line 3-3 of Fig. 1. Fig. 1 shows a perspective detail view of the nozzle. Fig. 5 shows a perspective detail view of my improved attachment for controlling the access of air through the nozzle.

In the accompanying drawings I have used the reference numeral 10 to indicate the lower portion of a carbureter shell which is substantially the form of a cylinder w th i an outwardly extending circumferential annular flange 11 at its upper end. Resting upon the flange 11 is a plate 12 having a comparatively large cent a]. opening 13. The opening 13, however, is of slightly smaller diameter than the cylinder 10 so that the plate 12 extends slightly over the opening in said cylinder 10 at the upper end thereof, as clearly shown in Fig. 1. Mounted resting above the plate 12 is a similar plate 14 having at its outer edge an annular downwardly extending flange 15.

The plates 14 and 1.2 form a casing to receive the segmental plates 16 of an iris valve or diaphragm 01': the type set forth in my application for patent above named. Said plates 16 are secured at one end to the plate 12, and are secured at the other end to the annulus 17, hall of which is shown in Fig. 2, the other half being removed to illustrate the arrangement oi. the plates 16. By movement of the annulus 17 the iris valve may be operated to open or close the air opening. Above the plate 141 is a mixing chamber 19 in which is a throttle valve 20 preferably of the butterfly type. At its lower end the mixing chamber 1?) is provided with a circumferential annular outwardly extending flange 21 which rests upon the plate 1:1. Receiving and inclosing the outer ends of the flanges ll and 21 and the casing for the iris valve is a shell or casing 22 made in two halves and provided with flanges or lugs 23 toreceive screw threaded bolts 24 by which the two halves of the casing 22 are secured together. Extending through the lower portion o'l:- the shell or member 1.0 is gasolene intake tube 25 communicating with which is an inwardly extending tube 26. At the upper end of the tube 26 is formed a nozzle of peculiarconstruction. At the upper end 3 of said tube a plate 27 is formed extending laterally in opposite direction from said tube 26. The tube 26 extends upwardly beyond the plate 27 and forms at its upper end a valve seat 28. The valve seat 28 is located suljistantially on a level with the plates 16. Tu the plate 27 is formed a slot 29 open at its upper end and curved inwardly and downwardly to communicate with the tube 26, as clearly shown in Fig. 1. It willbe seen that the slot 29 is partially closed at its middle by the valve seat 28. The form of the slot 29 is such that when gasolene is passing through the intake tube 25 and 26 a wide opening is exposed to the action of air passing around the nozzle just described.

For exposing the upper open end of the l it) slot 29 to the action of the passing air or for excluding the air from it I have provided the following specially constructed device: I provide a cylinder 30 shown in Fig. 5, having opposite openings 31 in the lower portion of its wall. At its upper end the cylinder 30 is formed with opposite in wardly extending plates or bars 32 of sufficient width to cover the top of the plate 27. In the upper edge of the cylinder 30 I cut slits and bend the portions 34: between the slits slightly upwardly, as clearly shown in said Fig. The cylinder 30 is installed within the cylinder 10 with the plates 32 above the slot 29 in the plate 27 as shown in Fig. 1. The cylinder 30 is placed at such a height in the cylinder 10 that the upwardly bent portions 34 engage the inner edge of the plate 12. Extended through the opposite sides of the cylinder 10 are screws the inner ends of which are cone shaped at 36. The cylinder 30 is so located that when the screws are screwed outwardly the cylinder 30 is at the lower limit of its movement and the plates 32 rest above the plate 27 and close a large part of the slot 59. When the screws 35 are screwed inwardly their cone shaped inner ends engage the cylinder 30 and move it upwardly. The cylinder is made of somewhat resilient metal and when moved upwardly, as justdescribed, the portions 34- are forced against the plate 12. hen the cylinder 30 is raised the plates 32 are, of course, moved away from the slot 29 so that gasolene can pass more readily from said slot upwardly into the mixing chamber. The parts 34; exert a constant downward pressure so that when the screws are screwed outwardly the cylinder 30 will be moved downward.

I provide a needle valve 37 to eo-act with the seat 28. In the drawings I have shown a needle valve with an ordinary screw threaded stem extended through the mixing chamber, but I intend to use with my pres ent device a needle valve and mechanism for controlling the parts similar to those shown in my above mentioned application for patent. Said controlling mechanism, however, forms no part of my present invention.

In the practical operation of my improved carbureter, the throttle valve may be open andthe iris diaphragm or valve opened at the same time. IN hen this occurs the slot 28 is exposed so that the passing air may take up a larger amount of gasolene. It should be noted, in this connection that the length of the bars or plates 32 is such that they do not cover the slot 29 for a short distance on each side of the valve seat 28. As the air passes upward, it passes the plates 32, is deflected and creates a slight vacuum, thereby drawing gasolene from the portions of the slots which are covered by the plates. The amount of air which passes the plates 32 determines the vacuum and this determines the amount of gasolene taken up. It therefore follows that the vacuum is det n'mined bv the speed of the motor so that the proper amount of fuel is obtained and the gasolene is thoroughly broken up and vaporized for a perfect mixture. When the iris diaphragm or valve is closed it covers the slot 28 excepting the passage through the valve seat. By controlling both the gasolene opening and the air opening in unison I am able to secure, at all times, a proper mixture.

The position of the cylinder 30 may be regulated by means of the screws for adjusting the carbureter for different motors and different conditions.

It will be understood that changes may be made in the details of the construction of my device without departing from theessential features thereof, as set forth in the appended claims.

I claim as my invention:

1. In a device of the class described, a shell, a mixing chamber above said shell, an iris valve at the lower end of said mixing chamber, a fuel. feed nozzle adjacent to said valve having at its upper end an elongated slot, adjustable plates beneath said valve and extending over the outer ends of said slot.

2-. In device of the class described, a carbureter shell, an iris valve therein, a fuel feed nozzle adjacent to said valve having in its upper surface an elongated slot, plates below said valve extending over the outer ends of said slot, and means for vertically adjusting said plates.

3. In a device of the class described, a

carbureter shell, an iris valve therein, a fuel feed nozzle ad'acent to said valve having in its upper sur ace an elongated slot, a'cylinder in said shell below said valve provided with opposite inwardly extending plates above said slot not extending tothe center thereof, and means for vertically adjusting said cylinder.

4. In a device of the class described, a carbureter shell, an iris valve therein, a fuel feed nozzle adjacent to said valve having in its upper surface an elongated slot, a cylinder in said shell below said valve provided with opposite inwardly extending plates above said slot not extending to the center thereof, said cylinder being provided with yielding means for holding it at its'lower position of movement and means for moving said cylinder upward.

5. In a device of the class described, a carbureter shell, a fuel feed nozzle therein having at its upper endan elongated slot, a fuel intake tube communicating with said slot, adjustable plates above the outer ends of said slot.

6. In a device of the class described, a

carbureter shell, a fuel nozzle having in its surface an elongated slot, a fuel intake tube communicating with said slot, a cylinder mounted in said shell and provided with opposite inwardly extending plates above said slot which do not extend to the middle thereof, yielding means for holding Said cylinder at the lower position of its movement, and means for moving said cylinder upwardly.

7. In a device of the class described, a carbureter shell, a fuel feed nozzle therein, having in its upper surface an elongated discharge slot, plates for closing said discharge opening, and means for varying the distance between said plates and said discharge opening.

8. In a device of the class described, a carburetor shell, an iris valve therein, a fuel feed nozzle adjacent to said valve having in its upper surface an elongated slot, and plates below said valve extending over the outer ends of said slot.

9. In a device of the class described, a carbureter shell, a feed nozzle having in its upper end a central fuel discharge opening with a valve seat formed around it and with elongated discharge openings on each side of said seat, a valve adapted to coact with said seat, and means for regulating the size of the air opening around said elongated discharge openings.

Des Moines, Iowa, May 10th, 1913.

RAYMOND P. NORTON.

Witnesses SARA ROBINSON, M. WALLACE.

copies otothln patent may be obtained for five cent! each, by addressing the Commissioner of Patents. Washington, D. G. 

